One of the key benefits of this grade 630 stainless steel plate is that 630 stainless steel plate is available in solution treated conditions, at which they can be easily machined and age-hardened to attain high strength. The age treatment of grade 630 stainless steel plate is carried out at low temperatures, to avoid significant distortion. Therefore, this grade is used for applications such as the manufacture of long shafts that do not require re-straightening after heat treatment.
| Element | % |
|---|---|
| Chromium | 15.00 – 17.50 |
| Nickel | 3.00 – 5.00 |
| Copper | 3.00 – 5.00 |
| Niobium + Tantalum | 0.14 – 0.45 |
The great benefit of this grade (and of other precipitation hardening grades of stainless steel) is that they are generally supplied in the solution treated condition, in which they are just machinable, and then can be age hardened to achieve quite high strengths.
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